Answer:
Johann Gutenberg invented the modern printing press in the mid-fourteenth century, although the Romans already 400 years B.C. used clay molds and the Chinese in the eleventh century used porcelain pieces to make reproductions. In Europe, during the low middle ages, woodcut was used to print posters and pamphlets.
Gutenberg's merit was to refine existing printing techniques, cast each of the letters of the alphabet separately, and devised a system to put them one after the other and hold them. In this way it could compose pages faster and reuse the molds to compose others. To reproduce the drawings, the woodcut was still used and subsequently hand painted.
In 1452 the printing of the most important work in the world of printing began, the "42-line Bible" or "Gutenberg Bible", marking the beginning of the Printing Age. Of this (named for the number of lines printed on each page) 180 copies were produced (45 on parchment and 135 on paper), a large number of books printed at that time, receiving the name of incunabula, denomination that all books printed before January 1, 1501.